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Sökning: WFRF:(Delannay L.)

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1.
  • Lin, Fengxiang, et al. (författare)
  • Local stress field induced by twinning in a metastable β titanium alloy
  • 2017
  • Ingår i: IOP Conference Series. - : Institute of Physics Publishing (IOPP).
  • Konferensbidrag (refereegranskat)abstract
    • A crystal plasticity based finite element model incorporating deformation twinning is applied in 3D to simulate the stress field around a twin lamella in a metastable β titanium alloy. Compared with conventional 2D simulations, the stress field determined by the 3D simulation shows better agreement with that measured experimentally using high resolution electron backscattered diffraction. Reasons leading to the different results in 2D and 3D simulations are discussed. It is also discussed in which circumstances 2D simulation is sufficient, and in which 3D is necessary. © Published under licence by IOP Publishing Ltd.
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2.
  • Lin, Fengxiang, et al. (författare)
  • Microscopic heterogeneity of plastic strain and lattice rotation in partially recrystallized copper polycrystals
  • 2020
  • Ingår i: International Journal of Solids and Structures. - : Elsevier. - 0020-7683 .- 1879-2146. ; 184, s. 167-177
  • Tidskriftsartikel (refereegranskat)abstract
    • Partial recrystallization of highly deformed polycrystalline aggregates creates a bimodal grain size distribution, which improves ductility while maintaining relatively high strength. In this work, the microstructure evolution during isothermal annealing of cold rolled copper samples was investigated using electron backscattered diffraction (EBSD) and the macroscopic mechanical strength of partially recrystallized samples was measured under uniaxial tension. Different models were tested in order to reproduce both the macroscopic mechanical response and the microscopic strain field inside a sample with 41% recrystallized grains loaded inside a scanning electron microscope to allow in-situ EBSD mapping. Crystal plasticity based finite element modeling (CPFEM) performed on a 2D mesh conforming to the experimental microstructure was compared to 3D predictions on an idealized model microstructure. © 2019
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  • Resultat 1-2 av 2
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konferensbidrag (1)
tidskriftsartikel (1)
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refereegranskat (2)
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Lin, Fengxiang (2)
Delannay, L. (2)
Shi, Q (1)
Marteleur, M. (1)
Alkorta, J. (1)
Jacques, P. J. (1)
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Karlstads universitet (2)
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